Adjustable wrench.



H.` A; MOGARTHY.

ADJUSTABLE WRENCH.

APPLIOATIONIILED 00T. 24, 1912.

Patented Deo. 30, 1913.

In ventot".

Witnesses.

COLUMBIA PLANOGRAPH co..w^SH xNGTaN. D. c.

HIRAIVI A. IVICCABTHY, OF PETERBOROUGFH, ONTARIO, CANADA.

ADJUSTABLE W'RENCH.

Specification of Letters Patent.

Y Patented Dec. 30, 1913.

Application filed October 24, 1912. Serial No. 727,529.

To all whom it may concern.'

Be it known that I, Hman A. MCCARTHY, a subject of the King of GreatBritain, and resident of Peterborough, county of Peterborough, Provinceof Ontario, in the Dominion of Canada, have invented certain new anduseful Improvements in Adjustable Wrenches, as described in thefollowing specification and illustrated in the accompanying drawings,that form part of the same.

rlhe principal feature of this invention consists in the novelconstruction and arrangement o-f parts, whereby an adjustable jaw memberis slidably held within a guideway having a rigid jaw member and wherebythe adjustable member may be instantly locked and held securely in anydesired position.

llhe objects of the invention are, to save time in the use of a wrenchby providing a wrench which may be opened to any desired sizeinstantaneously and to devise a Wrench of simple, strong and durableconstruction which may be manufactured at very low cost.

In the drawings, Figure 1 is a side elevational view of the invention.Fig. 2 is a side elevational view of the invention shown in partlongitudinal section. Fig. 3 is a cross sectional view through the linea-b Fig. 2. Fig. at is a cross sectional view through the line -g/ Fig.2.

Like numerals of reference indicate corresponding parts in each figure.

Referring to the drawings, 1 is the handle portion of the wrench whichis formed up of sheet metal bent into U-shape.

2 is the rigid jaw member formed with a shank 3 adapted to lit snuglyinto the rounded upper `portion of the handle and forming a shoulder 1at the head against which the end edge of the handle abuts.

5 is a pin extending through the handle portion 1 and shank 3 rigidlysecuring the said shank and jaw 2 to the handle.

6 is a pin secured at the butt end of the handle 1 adjacent to the openside, said pin being shouldered to prevent the sides of the handle beingsqueezed together.

7 is the adjustable jaw formed with a squared shank portion 8 adapted totit between the fiat sides of the handle member and sliding thereinbearing against the forward face of the shank 3. lThe point 9 of the jaw7 is preferably formed to extend outwardly farther than the point of therigid jaw 2. The front face vofthe shank of the adjustable jaw memberisformed with transverse serrations 10.

11 is the locking lever pivotally secured Lon a pin 12 extending througha pair of forwardly extending lugs 13 formed on the front edges of thehandle member 1 intermediate of its length.

14 is a transversely serrated portion eX- tending inwardly from thelever 11 adapted to mesh into the serrations in the adjustable member.

15 is a pin secured in the end of the lever 11 and extending angularlyinward therefrom and adapted to receive the end of the spiral spring 16which is arranged between the sides of the handle member and extendsforwardly encircling the reduced end 17 of the adjustable member 7.

1S is a hook shaped end formed on the lever 11 adapted to extend betweenthe sides of the handle and to engage the cross pin 6 thereby limitingthe outward movement of t-he locking lever.

In the use of this device, the operator places the point of theadjustable jaw in engagement with the pipe or nut which is to be turnedor held and by pushing forward upon the handle slides the adjustablemember back from the rigid jaw 2 allowing the said pipe or nut to slipin between the jaws. The spiral spring 16 holds the adjustable jawmember in close contact with the article to be gripped. The operator.then presses upon the locking lever 11 and as the angle face of theserrations of said locking lever are arranged slightly in advance of theangle faces of the serrated portion of the adjustable jaw member, theinward pressure causes a tightening of the jaws, thus insuring a securegrip on the article to be turned.

in order to release the wrench it is merely necessary for the operatorto release the locking lever by loosening the lingers on the handle 1.On the release of the locking lever the spring 16 swings it outwardlyupon its pivot withdrawing ,the tooth portion from engagement with theadjustable member, the spring then forcing the adjustable member outwardtoward the head end.

l/Vhat I claim as my invention is 1. ln an adjustable wrench, an outerhollow handle having a rigid jaw member secured thereto, a jaw memberslidably arranged in said hollow handle and formed with a toothed frontface, a locking lever pivotally secured in said handle and having atoothed portion adapted to engage the toothed face of said adjustablejaw member, and a spiral spring` having one end secured to theadjustable jaw member and the other end secured to the locking' leverYadapted to release said locking lever and return the adjustable memberto its forward position.

2. ln an adjustable wrench, a handle portion formed of sheet metal bentinto U-shape in cross section, a head rigidly secured to said handle, anadjustable jaw member slidably..- arranged between the sides of saidhandle, a looking lever pivotally secured to the sides of said handle infront of said adjustable member and adapted to engage and lock saidadjustable member, said handle 20 having' an are shaped hook memberatits outer end, a pin secured in said handle and adapted to engage saidhook member vto limit the outward movement of the locking,y

lever, and spring means for releasing said 25 Hilti-XM A, MCCARTHY.

lWitnesses Marmi MCCARTHY, N. ROUTLY.

Copies of this patent may be obtained for ve cents each, by addressingthe Commissioner of Patents, Washington, D. G.

